Reaction environment self-modification on low-coordination Ni^(2+)octahedra atomic interface for superior electrocatalytic overall water splitting

作     者：Kaian Sun Lei Zhao Lingyou Zeng Shoujie Liu Houyu Zhu Yanpeng Li Zheng Chen Zewen Zhuang Zhaoling Li Zhi Liu Dongwei Cao Jinchong Zhao Yunqi Liu Yuan Pan Chen Chen Kaian Sun;Lei Zhao;Lingyou Zeng;Shoujie Liu;Houyu Zhu;Yanpeng Li;Zheng Chen;Zewen Zhuang;Zhaoling Li;Zhi Liu;Dongwei Cao;Jinchong Zhao;Yunqi Liu;Yuan Pan;and Chen Chen

作者机构：State Key Laboratory of Heavy Oil ProcessingCollege of Chemical EngineeringChina University of Petroleum(East China)Qingdao266580China Department of ChemistryTsinghua UniversityBeijing100084China College of ScienceChina University of Petroleum(East China)Qingdao266580China State Key Laboratory for Modification of Chemical Fibers and Polymer MaterialsCollege of TextilesDonghua UniversityShanghai201620China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2020年第13卷第11期

页      面：3068-3074页

核心收录：

学科分类：0808[工学-电气工程] 081704[工学-应用化学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(No.21676300) the Shandong Provincial Natural Science Foundation(No.ZR2018MB035) the Fundamental Research Funds for the Central Universities(Nos.19CX02008A and 16CX06007A) PetroChina Innovation Foundation(No.2019D-5007-0401) Taishan Scholars Program of Shandong Province(No.tsqn201909065) Tsinghua University Initiative Scientific Research Program 

主　　题：atomic interface effect overall water splitting high current density reaction environment self-modification density functional theory 

摘      要：Large scale synthesis of high-efficiency bifunctional electrocatalyst based on cost-effective and earth-abundant transition metal for overall water splitting in the alkaline environment is indispensable for renewable energy *** this regard,meticulous design of active sites and probing their catalytic mechanism on both cathode and anode with different reaction environment at molecular-scale are vitally ***,a coordination environment inheriting strategy is presented for designing low-coordination Ni^(2+)octahedra(L-Ni-8)atomic interface at a high concentration(4.6 at.%).Advanced spectroscopic techniques and theoretical calculations reveal that the self-matching electron delocalization and localization state at L-Ni-8 atomic interface enable an ideal reaction environment at both cathode and *** improve the efficiency of using the self-modification reaction environment at L-Ni-8,all of the structural features,including high atom economy,mass transfer,and electron transfer,are integrated together from atomic-scale to *** high current density of 500 mA/cm2,the samples synthesized at gram-scale can deliver low hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)overpotentials of 262 and 348 mV,respectively.